riteshraja STL is an airport underserved with amenities, but that will hopefully change with their new airport director. Unfortunately, there are no great restaurants (aside from a few chains and bars) in the terminal. If you ever make it to St. Louis for more than a layover, the city has some amazing food options!

gj83 St. Louis is known for a few items including Toasted Ravioli. It's also home to Gooey-Butter Cake and a type of pizza with wafer thin crust. It has a great type of BBQ that is much less vinegar tasting than that of Kansas City and has more variety than the pulled-pork-only I've sampled in North Carolina.